That's the plan, yes. Keep in mind that this will be a 1080p edit primarily, so the ESB scenes will be upscaled, but the ROTS scenes will be native with some colour correction this time around.
I plan on doing these resolutions:
Bluray 1080p (50GB)
Bluray 720p (25GB)
DVD 480p (10GB)
And I'll probably just do a 720p MKV.